Edward makin



(No Model.) l 2 Sheets-Sheet 1.

E.. MAKIN, Jr.

STEAM BOILBR.

Patented Mal'. 1, 18Q8.

` (No Model.)

2 sheebsfsheet 2. E. MAK'IN, Jr. 'STEAM BOILER. No. 599,853.

Patented Mar'. l, 1898.

o.. wAsHmaToN n c UNTTED STATES PATENT lGinucE.,

EDWARD MAKIN, JR., OE MANCHESTER, ENGLAND.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 599,853, dated March 1, 1898. Application filed May 20,1897. Serial No. 637,392. (No model.) Patented in England August 6, 1896,1To. 17,358.

T a/ZZ whom it may concern:

Be it known that-I, EDWARD MAKIN, .I r., a subject of the Queen of Great Britain, and a resident of 40 New Brown street, Manchester, in the county of Lancaster, England, have invented certain new and useful Improvements in Steam-Boilers, (for which I have obtained Letters Patent in Great Britain, No. 17,358, bearing date August 6, 1896,) of which the following is a specification.

My invention relates to improvements in i steam-boilers of the tubular type-such, for

example,as the well-known Babcock du Wilcox and Belleville boilers; and my improvements consist chiefly in the arrangement, use,

l and application of a novel apparatus for superheating the steam generated in the usual arrangement of tubes, or,alternatively, partly in the tubes and partly in a similar apparatus to that which I employ for superheating.

The apparatus which I employ as a steam superheater or generator or for both purposes consists of a series of hollow-walled steam or water circulating vessels, preferably in the form of conical shells placed in a convenient partof the llue and arranged, preferably,l so

. that the large end of one cone overlaps the small'end of the preceding cone, but without touching it, thus leaving spaces between, around, and through the cones for the passage of the furnace-gases in order to expose as large a surface as possible to the action of the heated gases.

In the accompanying two sheets of drawings I illustrate my improvements as applied to a boiler ofthe Babcock da Wilcox type, Figure l being a side sectional elevation of the boiler, showing one apparatus connected for steam-generating; and Fig. 2 is a similar view showing a similar apparatus connected for steam-superheating.

In the views, o designates the steam and v water drum or separating vessel; b, the furnace-flue; c, the lire-bars; d, the furnacewalls, and e the series of hollow-walled cones. The series of cones@ (shown in Fig. l) are for the purpose of steam generation and are ,therefore supplied with water througha pipe f from the bottom of the drum o or from any l other convenient source of supply. Each of the cones e is connected by branches to the feed-pipe f and also to a discharge or delivery pipe z', which is connected to the drum ct, preferably at or about the water-level. The heated gases from the furnace circulate through, between, and around the hollowwalled cones e, the construction and arrangement of which, as shown and described, gives a very large heating-surface, whereby water is heated and steam is rapidly generated in addition to the steam generated in the usual nests of inclined tubes n. In like manner the steam is superheated in a similar arrangement of hollow-walled cones e, placed in the flue b beside the steam generating cones e, or in substitution for such cones.

Each of the cones e is connected, as shown in Fig. 2, by branches to a steam-supply pipe j, connected to the steam-space of the drum ct and also to a steam-delivery pipe k, by which the steam is conveyed to the engine (not shown in the drawings) or elsewhere, as required.

Any number of the hollow-walled vessels may be employed and their form and arrangement' may be varied without departing from the nature of my invention.

I do not wish to limit myself to the application of the invention to any particular form of boiler nor to any particular location of the invention in the boiler, and it will be obviousv that the invention may be adapted as a steamsuperheater without departing from the spirit of the invention.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim, and desire to se.- cure by Letters Patent of the United States,

1. In a steam-generating boiler, the combination with the boiler of the steam-generator comprising a series of hollow-walled cones each having a passage through its interior, the small end of one cone projecting into the large end of the adjacent cone leavinga space for the passage of the heat products between and through the cones and the connection between the hollow-walled cones and the boiler, pipes and the hollow-walled cones, substansubstantizilly as described. Linlly as described. Io 2. In Combination with the steam-boiler, :L In witness whereof I have hereunto set my generator comprising the series of hollowhand in presence of two witnesses. walled cones arranged end to end, :L pipe ex- ED\VARD MAKIN, JUNIOR.

tending along one side of the series, a second i Vitnesses: pipo extending along Iolie other side of the se- S. D. GILLETT, ries and the branch connections between said HERBERT R. ABBEY. 

